Evaluating using CTNK.GPU in C#, when training model of keras background cntk??

[whaozl]

Python CNTK API How to use keras background cntk model?

[ritalaezza]

@whaozl I think I have the same question. I want to be able to train my models in python, using Keras library with the CNTK backend. Then I would like to evaluate the trained model in a C# application using new real-time data. Is this even possible?

What I've done so far:

• Using Keras+CNTK, I've trained a model which seems to perform well.

• Tried saving the Keras model so that I can load it in C# application: cntk.combine(model.outputs).save('my_cntk_model')

• Tried to load that model in a C# console application (where I installed the CNTK.GPU NuGet package): Function.Load("my_cntk_model", CNTK.DeviceDescriptor.CPUDevice) when I try debugging this line of code, an exception occurs:

  BadImageFormatException was unhandled An unhandled exception ocurred in mscorlib.dll Additional information: Could not load or assembly 'Cntk.Core.Managed-2.1 ... An attempt was made to load a program with an incorrect format.

[whaozl]

I have the same problem.

[sharpwood]

Is there a plan to solve this problem? @cha-zhang

[ebarsoumMS]

Keras save on its own format which isn't supported by CNTK. @souptc can we access the underlying CNTK graph from Keras?

[warmes09]

We don't have solution to this problem ?

[ghost]

I have this problem too. I tried saving and loading in C# ecosystem. It gave the same error

[ebarsoumMS]

Can you load the model through Python? BadImageException is usually because of mix and match between x64 and x86.

[ghost]

"Can you load the model through Python? BadImageException is usually because of mix and match between x64 and x86." I can do it with CNTKv2 version in python. However I want it to be in C# and with ONNX version.

[ebarsoumMS]

Hi @CWD4RKC0D3R , this just for testing.